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Finding the Fourth Proportional to 28,069, 38,735.76 and 15,493.48

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Solution

The fourth proportional to 28,069, 38,735.76 and 15,493.48 is: 21,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069 : 38,735.76 = 15,493.48 : x
  2. Step 2: Convert to fraction form
    28,069/38,735.76 = 15,493.48/x
  3. Step 3: Cross multiply
    28,069x = 38,735.76 × 15,493.48
  4. Step 4: Simplify right side
    28,069x = 600,151,722.84
  5. Step 5: Solve for x
    x = 600,151,722.84/28,069
  6. Step 6: Final answer
    x = 21,381.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.